LSE top 100LSE top 100Crowbar (88)Crowbar (88)

Tool and Usage

Project details
Programming languagePython
AuthorGökhan Alkan
Latest release4.2 []

Project health

This score is calculated by different factors, like project age, last release date, etc.

Why this tool?

While most brute forcing tools take a similar approach, Crowbar can use different methods that are not always available in other utilities. For example, Crowbar can use SSH keys, instead of the typical username and password combination. This might be useful during penetration testing when these type of details are discovered.

Background information

Crowbar was formally known as Levye.

Usage and audience

Crowbar is commonly used for penetration testing. Target users for this tool are pentesters.

Tool review and remarks

The review and analysis of this project resulted in the following remarks for this security tool:


  • + The source code of this software is available

History and highlights

  • Demo at Black Hat USA 2014 Arsenal
  • Demo at Black Hat USA 2015 Arsenal

Author and Maintainers

Crowbar is under development by Gökhan Alkan.


Supported operating systems

Crowbar is known to work on Linux.

Crowbar alternatives

Similar tools to Crowbar:



The known_hosts_bruteforce is a script to discover hostnames from the known_hosts file. This can be useful during penetration testing or incident response.



The acccheck tool performs a password guessing and dictionary attack on SMB services used to share files and printers.



Eapmd5pass is a password attack tool for EAP-MD5 authentication traffic. It uses an offline attack, meaning it deals with captured network data.

All Crowbar alternatives

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Related tool information

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This tool is categorized as a brute force tool and password security tool.

Related terms